Top Discharges

Streamgauges reporting the most discharge on the Nissequogue River

10 Day Trend

Discharge comparison for the highest gauges over the past 10 days

Expected Streamflow Ranges

Streamflow discharge range for this time of year

The Nissequogue River is an 8.3-mile (13.4 km) long river flowing from Smithtown, New York into the Long Island Sound. Its average discharge of 42.2 cubic feet per second (1.19 m3/s) is the most of any of the freshwater rivers on Long Island. The river, like all other freshwater rivers on the island, is totally derived from groundwater (not from lakes). Its name is derived from one of the Algonquian-speaking Nissequaq tribe in the area.The river rises south of NY-454 just east of the Hauppaugue County Offices and flows into Blydenburgh Park Pond where other tributaries that come from East ... Source: Wikipedia